howard



O. H. HOWARD.

WARPING FRAME.

No. 78,453. PatentedJune 2, 1868.

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C. h. HOWARD, OF LEWISTON, MAIN E, ASSIGNORBY MESNE ASSIGNMENT. TOHlMSELF AND HORACE N. JORDAN, OF SAME PLACE.

Letters Patent No. 78,453, dated June 2,1868.

IMPROVEMENT IN WARPING' -FRAME.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, O. H. HOWARD, of Lewistou in the county ofAndroscoggin, and State of Maine, have invented an Improvement inBeaming or Warping-Frames; and I do hereby declare that the following,taken in connection with the drawings which accompany and form part ofthi snecification, is a description of my invention sufficient to enablethose skilled in the artto practise it,

' In transferring warp-yarn from the spools to yarn-beams, in whatare-known-as beamers" or warpcrs," it is customary so effect a directtransfer, placing no mechanism between the spools and the yarn-beam,excepting the stationary guides, through andover which the yarns pass. I

Great care has to be exercised in piecing the yarn whenever any breakageoccurs, so as to-preserve a uniform length of yarn throughout the warp,for which purpose it is necessary to stop the yarn-beam at every break.But when the'bcam stops suddenly the spools continue to revolve, and asthey-are delivering from fifty toseventy-five yards per minute, theyarns run off loosely therefrom for a half yard or more before stopping,

' and kinl-z and become snarled, so that it sometimes takes hours to getthem right again.

To remedy. this, a balance-wheel has been applied to the-rotary cylinderupon which the yarn-beamrests, so that they-arn-beam may stop graduallywhen a break occurs. But this is objectionable, because, if thebeamcontinues to revolve, the broken yarns are left shorter than theothers, and will not pick up clear, making it run off badly inthe nextoperation, (dressing,) and consequently in the ultimate operation ofweaving-.-

There has also been employed a take-up mechanism, consisting of. a rodheld up by the tension of the yarns passing under them, thc weight ofthe rod carrying it, down, and with it the slack of the yarns, when thebeam is stopped byhand. But this is objectionabloin that it takes theslack down into the frame where the yarns are inaccessible to theoperative.

The object of my invention is to remedy the defects mentioned, bycombining with the beam or frame a. take-up mechanism, .which shallcarry th slack of the'yarns up above the warper-fran'aewhen, by reasonof a breakage, the yarn-.beam'is suddenly stopped; andit is in theemployment of a take-up roll or bar, as described hereafter, upona-bcamer-frame, to take up such slack, that my invention consists.'

"The drawingsrepresent-a beame'r-frame'having my improvement embodiedtherewith-- A showing a planyand Ba vertical cross-section. v a

a denotes the framework;,b b, the stands containing the yarn-spools c,the yarn d from which passesfrom the spools through suitableguiding-eyes and-over a guide-roll, e, to the yarn-beam f. In standardsg, atoppo site ends of the framc,"are vertical slides, h, (sliding insuitable grooves or ways,) in the tops of which are bearings for a roll,2'. 1

To a 'rod, 7:, connecting the lower onilsof the slides 7i, cords Z arefixed, these cords running upto and over 'sheavesm, and having suspendedfrom their opposite ends a weight or weighted beam, 12, which outweighsthe slides and roll e',.and raises the roll,.'when' no strain orpressure is upon its upper surface. When the roll is at itslowcst-position, it is brought into or nearly into a horizontal planewith two guide-rolls, 0, on its opposite sides,- thc ya'rnsrnnning underthe guide-rolls and over theroll i, as seen at Brand when the mechanismis in operation, the strainnpon the yarns holds the roll t down, (in theposition seen at 13,) until, by the breaking of a thread, the rotationof the yarn-beam is arrested. As the yarns run from the spool, aftersuch-arrest of the yarn-beam, the strain is taken from the roll 1', andthe weight 'n, overcoming the weight of the rollz' and its frame, liftsthe roll, which, by its rise, assumes the position seen the dotted linesat 13, taking up the slack b tw en the yarn-beam and thc'spool-frame, aswill be readily understood, By this means the yarn tobe mended may bekept uniform in length with the others, and all the yarns are kept fromentanglement or kinking.

More than one take-up roll, rod, or bar may be used if desirable, andthe arrangement or sp'ecific method I 1 of hanging the roll, orof.,.cousmg it to rise to take the slack, may bovarred from that shown.

It will be obvious thgzt with this take-up roll, if the broken eilds runby, the yarn-beam-may 'be turned back without tangling or loosening thethreads, as the roll 2' will take up slack from the yarn-beam as well asfrom the spools.

I claim the combination with the stationary gukle, guirle-rolls, or rods0, of the weighted rising-rod, bar, or roll, so arranged as, in itsascent, to take up the elack, substantially as set forth.

3. H. HOWARD. Witnesses I. F. DpnRELL, H. JORDAN.

